-former Nokia CEO -former Blackberry CEO -former Bell CEO -former (insert dead company name here) CEO
Indeed. However, it doesn't appear eBay has any serious competition at the moment. They're far and away the top online auction and online bank both afaik.
BTW, Bell is still around in many forms. They were split up into many successful smaller chunks, such as AT&T and (what is now known as) Verizon. Actually, I'd hazard a guess that each of those two pieces are bigger now than bell was before the split.